Mill.



J. L. TERWILLIGBR.

MILL.

,91 1 APPLICATION FILED JULY 30, 1908. 18

3 SHEETS-$33111 1.

J. L. TERWILLIGER.

Fzyz

APPLICATION FILED JULY 30, 1908.

Patented May 18, 1909.

3 SHEETS-83KB! 2.

i w z Eluoemtoz J. L. TERWILLIGER.

MILL.

APPLIUATION FILED JULY 30, 1908.

Patented May 18, 1909.

8 SHEETS-SHEET 3.

.TUBAL L. TERWILLIGER, F FLORENfiE, COLORADO.

HILL.

Specification of Letters Patent.

Patantedmy 18, 1909.

Application filed July 80, 1908. Betta! No. 448,188.

To all whom it may concern:

Be it known that I, JUBAL L. TERWILLI- GER, a citizen of the United States, residin at Florence, in the county of Fremont an State of Colorado, have invented certain new and useful Improvements in Mills, of which the l'ollowin is a specification, reference ha in accomplishing its intended u-rpose.

With t 9 above and other 0 jects in view, the invention consists of the novel features of consti 1'- on and the combination and arran ement of arts hereinafter full descri ed and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a plan view of the improved mill; F ig. 2 is a vertical longitudinal section; Ihgs. 3 and 4 are end views of the rotary body; and Fig. 5 is a transverse section. Fig. 6 is a detail vertical section through the lower end of the hop er and the inlet to the mill; and Fig. 7 is a detail perspective of the parts shown in Fig. 6.

The mill comprises a rotary body 1 disposed horizonta ly and having at 1ts ends trunnions 2, 3 mounted for rotation in bearings 4 upon 11 rights 5 rising from a suitable base 6. The ody 1 comprises two ends or heads 7, 8 between which are secured three cylindrical tubes 9. A greater or less number of the tubes 9 may be provided and they are arranged in contact with each other and secured together by rivets or the like 10 at their points of contact and also by longitudinall extendin brace straps or lates 11 the e ges of whic are bent angular y to provide flanges that are riveted, as shown at 12, to the tubes 9. This construction eflectivcly unites the tubes 9 and the latter are securel united to the heads 7 8 by forming the en 5 of the tubes with radial flanges and riveting said flanges, as shown at 13, to the heads. vided in the tubes 9 and closed by covers 15 which may be bolted or otherwise removably secured in osition. The head 8 is located at the disc arge end of the body and is formed with openings 16 of less size than the r internal diameter of the tubes 9 and said openings are closed by screens 17 of compara- Suitable man-holes 14 may be pro-' tively fine mesh. The head 7 at the inlet end of. the body is formed with a large concentric opening 18 covered by a concavo convex or funnelrshaped cap 1 9- in which the trunnion 2 is concentrically arran ed. Said trunnion 2. is hollow and of cylin 'cal form and serves as an inlet for the three tubes 9, which latter lonin. three longitudinal compartments in the body.

The ore, cement or other material to be pllailvei ized is fed to the tubular trunnion 2 by I positing. the same in a hopper 20, the reduced lower end of which receives said trunnion; and such material is fed throu h the latter by providing upon its inner wal a s iral flange 21, as clearly shown in Fig. 6 oft e drawings. In order to divide the material passing through the tubular trunnion 2 into three equal parts so that each of the tubes or compartments 9 will receive an equal amount,

three radially projecting division plates or blades 22 are arranged in the ca or plate 19. Said plates 22 radiate from the longitudinal axis of the body and are disposed between the. adjacent tubes 9, their outer edges being notched, as shown at 23, to receive the rejecting inner end of the trunnion 2. aid divisional plates divide the space or chamber within the cap 9 into three compartments each of which is in communication with one of the tubes or compartments 9 of the body through the opening 18 in the head 7. If desired, a screen 24 of coarser mesh than the screen 17 at the discharge end of the body, may be arranged over the opening 18 in the head. In or or to pulverize the material passing throu 9, loose grinding elements 25 of s herical or other form are provided in said to es. Said grindin elements are preferabl in the form of roun ed pebbles or rock of a out the size of an egg. Said tubes are preferably filled about half full with these grinding stones so that when the body is rotated they will roll over and over and effectively pulverize the material passing through the body. Any suitable means may be provided for rotating the body but a ear ring 26 is preferably secured upon the cad 7, as shown at 27, and is in mesh with a driving iinion 28 upon a shaft 29 journaled in suita 1e bearings upon the supporting frame or base. shaft 29.n'1ay be rovided with a pulley 30 or a drivin belt eading from any suitable source 0 power.

In operation, the crushed ore, cement or h the tubes or compartments The drive r into said tubular trunnion, and radiall other material to he pulverized is deposited in the hopper and power is applioi to the wheel to rotate the shaft 29 and hence the bodv 1. As the latter revolves the material in the hop or will feed through the trunnion 2 and be divided by the lates 22 into three equal streams, each one 0 whichlatter enters one of the tubes or compartments 9 of the body. The screens at the end of said tubes 9 will retain the rinding stones 25 therein and said stones wilfefl'ectivelv pulverize the material which will gradually work out of the fine screen 17 at the discharge end of the bod H aving thus described the invention what is claimed is: I

1. A mill comprising bearings, a rotatable body havin trunnions rotatable in the bearings, one 0 said trunnions being hollow to provide an inlet, said body also having a lurality of Ion itudinal compartments, a dis red cap arrange at the inlet end of the body and in communication with said compartments, said cap having a central opening in which the tubular trunnion is secured, a feed screw in said tubular trunnion, a hopper projecting arranged division plates arranged in sai cap and having their central portions recessed to receive the inner end of the tubular trunnion.

2. A mill comprising bearings, a rotary body consistin of circular heads, lon itudinall y arranged cylinders having Hanger open ends secured to said heads, a trunnion cen- V trally a: ran ed upon one head and rotatable in one 01 san bearings, a tubular trunnion rotatable in the other bearing, a feed screw arranged in said tubular trunnion, a hopper having a discharge end projecting into said tubular trunnion, a concavedea) having a central opening in which the tu ular trunnion is secured, said cap being secured concentricall upon the outer face of the adjacent hea of the body, the portions of the last mentioned head beneath the cap and opposite the open ends of the cylinders being removed to afford communication between the cavity in the cap and said cylinders, screens over said openings in the last mentioned ca the other head having portions opposite t e cylinders removed, screens over t e openings in the last mentioned head, radially arranged division plates in the cap and having their central portions recessed to receive the inner end of the tubular trunnion, and means for rotating the body.

In testimony whereof I hereunto ailix my signature in the presence of two witnesses.

JUBAL L. TERWILLIGER.

Witnesses:

W. H. KELso, J. E. BROADHEAD. 

